Let's get this math done. We have 533 and we're going to multiply it by 31. This is the same as taking 533 and adding it to itself 31 times.
Step 1: 0 + 533 = 533
Step 2: 533 + 533 = 1066
Step 3: 1066 + 533 = 1599
Step 4: 1599 + 533 = 2132
Step 5: 2132 + 533 = 2665
Step 6: 2665 + 533 = 3198
Step 7: 3198 + 533 = 3731
Step 8: 3731 + 533 = 4264
Step 9: 4264 + 533 = 4797
Step 10: 4797 + 533 = 5330
Step 11: 5330 + 533 = 5863
Step 12: 5863 + 533 = 6396
Step 13: 6396 + 533 = 6929
Step 14: 6929 + 533 = 7462
Step 15: 7462 + 533 = 7995
Step 16: 7995 + 533 = 8528
Step 17: 8528 + 533 = 9061
Step 18: 9061 + 533 = 9594
Step 19: 9594 + 533 = 10127
Step 20: 10127 + 533 = 10660
Step 21: 10660 + 533 = 11193
Step 22: 11193 + 533 = 11726
Step 23: 11726 + 533 = 12259
Step 24: 12259 + 533 = 12792
Step 25: 12792 + 533 = 13325
Step 26: 13325 + 533 = 13858
Step 27: 13858 + 533 = 14391
Step 28: 14391 + 533 = 14924
Step 29: 14924 + 533 = 15457
Step 30: 15457 + 533 = 15990
Step 31: 15990 + 533 = 16523

So, 533*31 = 16523